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Cruz angered his fellow Republicans with Obamacare push that many blame for shutdown

He has expressed his support for some anti-establishment candidates in the primaries

Ted Cruz appears to have played a key role in the emergency border bill falling apart in the House.

Less than 24 hours before GOP leaders pulled a vote on Thursday on the $659 million emergency measure to address the crisis provoked by a surge of migrant youth from Central America, the arch-conservative Republican senator had lobbied House allies to scrap it unless it included a provision to toughen deportation policy.

Support for the bill as written was already tenuous at best, but Cruz held sway, for the moment anyway. Negotiations were scheduled to run into Thursday night with a GOP meeting set for Friday morning to discuss next steps.

Still, the meddling complicated an already arduous process in both the House and the Senate of marshaling support to help thousands minors, many unaccompanied and still stuck in a legal limbo that is stressing immigration services.

Ground zero for the crisis is the Rio Grande crossing in Cruz's home state of Texas.

Has his reasons

Cruz had his reasons and it wasn't the first time he's figuratively crossed the Capitol to buck Republican leaders to make his case to conservative members.

The move that heightened legislative uncertainty most likely leaves President Barack Obama able to throw pretty sharp darts at House Republicans.

Obama's sure to blame them for doing nothing about the border crisis as Congress stops work for a month-long summer recess, likely leaving him to use his executive powers to do what he can in the meantime.

Even though getting a bitterly divided Congress to agree on a common approach on the border crisis in a midterm election year was a long shot from the start, it appears lawmakers in both parties won't even have the political cover as they arrive home of having voted for or against something in their own chamber.

"The Obama White House should put Ted Cruz on the payroll," Republican Rep. Peter King of New York quipped to the Washington Post following Cruz's latest foray into House affairs.

Should Congress leave for break?

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Cruz, a tea party star who may have presidential ambitions, met with House allies on Wednesday night in is office where pizza was served. His office wasn't saying much about it.

But others who were there said he pushed them hard for a provision that would bar the Obama administration from expanding a policy that prevents deportation of immigrants brought to the United States illegally as children.

He urged them to oppose the emergency border bill backed by Speaker John Boehner and his lieutenants unless it defunded that policy. Cruz likens it to amnesty even though it does not convey legal status.

"It's kind of shocking to me that some of our members are willing to turn their voting cards over to the Senate or to outside groups," Nunes said of those following Cruz' lead.

But Rep. Steve King, an Iowa Republican who attended the dinner meeting with Cruz, said the attendees did not make a pact on the House bill and denied that he twisted any arms to kill it, as Republican leadership aides have claimed.

Cruz placed the blame squarely on Democrats and the White House and denied his role in provoking the shutdown, despite being branded by Democrats and even some Republicans as the architect of the standoff.

And then there was Cruz and the debt ceiling.

And the debt ceiling

Just months later, Cruz again angered fellow Republicans by blocking a vote to raise the nation's borrowing authority so it could pay its bills.

Republicans quickly scuttled Cruz's filibuster attempt, which would have forced at least 60 senators to vote in favor of raising the debt limit to avoid a U.S. debt default.

That would have forced some Republicans into the awkward position of voting against the measure and being seen as responsible for another shutdown or voting for it and hurting their standing with conservatives.

Cruz has since cautiously waded into primary politics this election cycle by linking up -- often quietly -- with conservative groups that are backing challengers and opposing establishment incumbents in several Senate primaries.